you ever have those days where your Z just doesn't seem like its running normal... a little sluggish. Well I was having one of those after I had changed my PCV valves, cleaned throttle bodies, fuel filter, and so on a few weeks before. I thought, "now what!" Well it turns out my floor mat was getting all bunched up under the gas peddle... don't know why I had to share my idiocy, oh well at least it runs great again.